Thermal management assembly

Abstract

The utility model provides a heat management assembly which comprises a plurality of heat management parts, any heat management part is provided with an inner wall and an outer wall located on the periphery of the inner wall, a containing space capable of containing a battery cell is defined by the inner wall, the inner wall is matched with the battery cell in shape, and a flow channel allowing a cooling medium to pass through is formed between the inner wall and the outer wall. The multiple heat management parts are sequentially connected, and the flow channels in the heat management parts are sequentially communicated. In the heat management assembly, the cooling medium can sequentially pass through the flow channels in the heat management parts, so that the battery cells placed in the accommodating space defined by the inner walls of the heat management parts are cooled. The inner wall of each heat management piece is matched with the shape of the battery cell and has a large contact area with the battery cell, so that the inner wall can well conduct heat generated by the battery cell to the cooling medium in the flow channel, the battery cell is fully cooled, and the cooling effect is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal management, and more specifically, to a thermal management component. Background Art

[0002] Currently, generally, serpentine tubes are arranged on one or both sides of the battery cells to cool the battery cells. However, with the increasing demand for ultra-fast charging, the heat generation of the battery system is also greater, and the cooling effect of the original cooling structure will not meet the requirements. Summary of the Utility Model

[0003] The purpose of the embodiments of the present application is to provide a thermal management component to solve the technical problem that the cooling effect in the related art cannot meet the requirements.

[0004] The embodiments of the present application provide a thermal management component, including a plurality of thermal management parts. Any one of the thermal management parts is provided with an inner wall and an outer wall located outside the inner wall. The inner wall encloses an accommodation space capable of accommodating the battery cells and matches the shape of the battery cells. A flow channel for the cooling medium to pass through is provided between the inner wall and the outer wall. The plurality of thermal management parts are connected in sequence and the flow channels inside are communicated in sequence.

[0005] In one embodiment, a flow blocking part is provided at the connection of any two adjacent thermal management parts. The flow channel is arranged around the inner wall and includes an inlet flow channel and an outlet flow channel located on opposite sides of the flow blocking part. The inlet flow channels of any two adjacent thermal management parts are communicated with each other, and the outlet flow channels are communicated with each other.

[0006] In one embodiment, among the plurality of flow blocking parts, at least some of the flow blocking parts are provided with one or more diversion openings. The inlet flow channel and the outlet flow channel located on both sides of the flow blocking part are communicated through the diversion openings.

[0007] In one embodiment, in the direction of the cooling medium passing through the plurality of inlet flow channels, the total area of the diversion openings on each flow blocking part increases sequentially or increases step by step.

[0008] In one embodiment, the flow channel includes a plurality of sub-flow channels. The plurality of sub-flow channels of any one of the thermal management parts are in one-to-one correspondence and communication with the plurality of sub-flow channels of the adjacent thermal management part; any one of the diversion openings is arranged corresponding to the sub-flow channel.

[0009] In one embodiment, the thermal management component includes a manifold plate. The manifold plate is provided with a liquid inlet chamber and a liquid outlet chamber that are mutually partitioned. In the direction of the cooling medium passing through the plurality of sub-flow channels, the parts of the plurality of sub-flow channels located at the most upstream are all communicated with the liquid inlet chamber, and the parts of the plurality of sub-flow channels located at the most downstream are all communicated with the liquid outlet chamber.

[0010] In one embodiment, any two adjacent heat management components partially overlap and are connected together, and the overlap rate D satisfies 0 < D ≤ 100%.

[0011] In one embodiment, the overlap rate D = 30%.

[0012] In one embodiment, when the overlap rate D between two adjacent heat management components is less than or equal to a predetermined value, a reinforcing member is provided on at least one side of the connection between the two adjacent heat management components, and the reinforcing member connects the outer walls of the two heat management components.

[0013] In one embodiment, the outer surface of the reinforcing member facing away from the connection between the two heat management components and the outer walls of the two heat management components to which it is connected together enclose a groove; and / or, the predetermined value is 20%.

[0014] In the above heat management assembly, the cooling medium can sequentially pass through the flow channels inside multiple heat management components, thereby cooling the battery cells placed in the accommodation space surrounded by the inner walls of the respective heat management components. Since the inner walls of the respective heat management components match the shape of the battery cells and the two have a large contact area, the inner walls can better conduct the heat generated by the battery cells to the cooling medium in the flow channels, so as to fully cool the battery cells, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic three-dimensional structure diagram of the heat management assembly provided by the embodiment of the present application;

[0017] Figure 2 is Figure 1 a top view of the heat management assembly shown;

[0018] Figure 3 is Figure 2 an enlarged schematic view of the structure at C in the heat management assembly shown;

[0019] Figure 4 is Figure 2 a cross-sectional view taken along P-P of the heat management assembly shown;

[0020] Figure 5 is Figure 2Cross-sectional view at E-E and enlarged schematic diagram of the local structure in the shown thermal management component;

[0021] Figure 6 is Figure 1 Side view of the shown thermal management component;

[0022] Figure 7 is Figure 6 Cross-sectional view at T-T in the shown thermal management component;

[0023] Figure 8 is Figure 7 Enlarged schematic diagram of the structure at M in the shown thermal management component;

[0024] Figure 9 is Figure 7 Enlarged schematic diagram of the structure at N in the shown thermal management component;

[0025] Figure 10 is Figure 1 Schematic diagram of the overlapping connection of two adjacent thermal management parts in the shown thermal management component;

[0026] Figure 11 Stereoscopic structure schematic diagram of the thermal management component according to another embodiment of the present application;

[0027] Figure 12 is Figure 11 Top view of the shown thermal management component;

[0028] Figure 13 is Figure 12 Enlarged schematic diagram of the structure at Q in the shown thermal management component;

[0029] Among them, the reference numerals in the figure:

[0030] 10. Thermal management component; 100. Thermal management part; 110. Inner wall; 120. Outer wall; 130. Accommodating space; 140. Flow channel; 141. Liquid inlet flow channel; 142. Liquid outlet flow channel; 143. Sub-flow channel; 143a. Liquid inlet part; 143b. Liquid outlet part; 200. Flow blocking part; 210. Diversion port; 300. Manifold plate; 310. Liquid inlet cavity; 320. Liquid outlet cavity; 330. Liquid inlet port; 340. Liquid outlet port; 400. Reinforcing part; 410. Predetermined surface. Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0035] Please refer to Figures 1 to 10 As shown, the thermal management assembly 10 provided by the embodiment of the present application will be described. The thermal management assembly 10 includes a plurality of thermal management members 100. Any one of the thermal management members 100 is provided with an inner wall 110 and an outer wall 120 located outside the inner wall 110. The inner wall 110 encloses an accommodation space 130 capable of accommodating the battery cell, and matches the shape of the battery cell (not shown). A flow channel 140 for the cooling medium to pass through is provided between the inner wall 110 and the outer wall 120. The plurality of thermal management members 100 are connected in sequence and the flow channels 140 inside are connected in series.

[0036] It can be understood that the battery cell can be accommodated in the accommodation space 130 enclosed by the inner wall 110. When the cooling medium passes through the flow channel 140, the heat generated by the battery cell can be taken away, thereby playing a cooling role. Further, the inner wall 110 of the thermal management member 100 matches the shape of the battery cell, so that a larger contact area can be formed with the battery cell to fully cool the battery cell and improve the cooling effect.

[0037] It can be understood that multiple heat management components 100 can be arranged in a row in sequence along a straight line, or can also be arranged in a ring in sequence along an arc. Or, multiple heat management components 100 can also be adjusted to other arrangement forms according to the arrangement forms required by multiple battery cells. However, no matter how multiple heat management components 100 are arranged, multiple heat management components 100 need to be connected in sequence to form a whole, so that the flow channels 140 inside multiple heat management components 100 can be connected in sequence, so that the cooling medium can flow through multiple heat management components 100 in sequence to cool multiple battery cells.

[0038] In the present application Figure 1 In the illustrated embodiment, the number of heat management components 100 is eight. In other embodiments, the heat management components 100 can be any other number of two or more. In addition, the inner wall 110 of the heat management component 100 of the present application is cylindrical to adapt to the cooling needs of cylindrical battery cells. In other embodiments, the inner wall 110 of the heat management component 100 can also be cube-shaped to adapt to the cooling needs of square battery cells. The outer wall 120 of the heat management component 100 of the present application is cylindrical. In other embodiments, the shape of the outer wall 120 can also be adjusted to a cube shape according to needs.

[0039] In the above heat management assembly 10, the cooling medium can sequentially pass through the flow channels 140 inside multiple heat management components 100, so as to cool the battery cells placed in the accommodation space 130 surrounded by the inner walls 110 of each heat management component 100. Since the inner walls 110 of each heat management component 100 match the shape of the battery cell and the two have a large contact area, the inner walls 110 can better conduct the heat generated by the battery cell to the cooling medium in the flow channels 140 to fully cool the battery cell, thereby improving the cooling effect.

[0040] Combined with Figure 4 、 Figure 5 、 Figure 8 And Figure 9 As shown, specifically in the present application, a flow blocking member 200 is provided at the connection between any two adjacent heat management components 100. The flow channel 140 is arranged around the inner wall 110 and includes an inlet flow channel 141 and an outlet flow channel 142 located on opposite sides of the flow blocking member 200. The inlet flow channels 141 of any two adjacent heat management components 100 are connected, and the outlet flow channels 142 are connected.

[0041] By arranging the flow channel 140 around the inner wall 110 in a ring shape, the travel of the flow channel 140 in the circumferential direction of the battery cell can be increased as much as possible to cover a larger range in the circumferential direction of the battery cell, which helps to improve the cooling effect. In addition, by dividing the flow channel 140 of the thermal management component 100 into an inlet flow channel 141 and an outlet flow channel 142, in multiple successively arranged thermal management components 100, the cooling medium enters from the inlet flow channel 141 of the thermal management component 100 at the first position, and then successively passes through the inlet flow channels 141 of the other multiple thermal management components 100. Thus, the inlet flow channels 141 of the multiple thermal management components 100 together form an entry path for the cooling medium. After the cooling medium reaches the inlet flow channel 141 of the thermal management component 100 at the last position, it will enter the outlet flow channel 142 of this thermal management component 100, and then the cooling medium successively passes through the outlet flow channels 142 of the other multiple thermal management components 100 until it finally flows out from the outlet flow channel 142 of the thermal management component 100 at the first position. Thus, the outlet flow channels 142 of the multiple thermal management components 100 together form an outflow path for the cooling medium.

[0042] By arranging a flow blocking component 200 between the inlet flow channel 141 and the outlet flow channel 142, the cooling medium in the outlet flow channel 142 can be prevented from flowing back to the inlet flow channel 141 to ensure that the cooling medium successively passes through the inlet flow channels 141 of the multiple thermal management components 100. In addition, by arranging a flow blocking component 200 at the connection of two thermal management components 100, the two thermal management components 100 can share one flow blocking component 200 to reduce the structural complexity.

[0043] Continue to refer to Figure 4 、 Figure 5 、 Figure 8 and Figure 9 and

[0044] By providing a guide port 210 on the baffle 200, the liquid inlet channel 141 and the liquid outlet channel 142 can be connected. In this way, for two interconnected thermal management components 100, when the cooling medium flows along the liquid inlet channel 141 of the preceding thermal management component 100 and reaches the connection point of the two thermal management components 100, if the baffle 200 does not provide a guide port 210, all the cooling medium will continue to flow along the liquid inlet channel 141 of the succeeding thermal management component 100; if the baffle 200 provides a guide port 210, part of the cooling medium will continue to flow along the liquid inlet channel 141 of the succeeding thermal management component 100, while another part of the cooling medium will enter the liquid outlet channel 142 of the preceding thermal management component 100 through the guide port 210, and finally flow out after passing through other liquid outlet channels 142 in sequence. It can be understood that by designing whether multiple baffles 200 have guide ports 210 and the number of guide ports 210 opened, the flow rate of the cooling medium inside each thermal management component 100 can be changed, thereby helping the cooling medium to have a more consistent cooling effect on each battery cell when flowing through each thermal management component 100.

[0045] Specifically in the present application, in the direction in which the cooling medium passes along the plurality of liquid inlet channels 141, the total area of ​​the flow guide openings 210 on each flow blocking member 200 increases in a step-by-step manner. Figure 4 In the embodiment shown, there are seven flow-blocking members 200 at the connection of eight thermal management members 100. From left to right, the first flow-blocking member 200 has no flow-guiding opening 210, and the remaining flow-blocking members 200 have multiple flow-guiding openings 210. Specifically, the second and third flow-blocking members 200 each have two flow-guiding openings 210, the fourth and fifth flow-blocking members 200 each have three flow-guiding openings 210, and the sixth and seventh flow-blocking members 200 each have four flow-guiding openings 210. It is assumed that only the number of guide openings 210 of each baffle 200 is different, while the area of ​​each guide opening 210 is kept consistent. The area of ​​each guide opening 210 is s1. Then the total area of ​​the guide openings 210 on the eight baffles 200 is 0, 2s1, 2s1, 3s1, 3s1, 4s1, and 4s1 from left to right. In this way, the total area of ​​the guide openings 210 on each baffle 200 increases in a step-by-step manner, which can change the flow rate of the cooling medium inside each thermal management component 100, so that the cooling medium has a more consistent cooling effect on each battery cell when flowing through each thermal management component 100, thereby reducing the temperature difference of each battery cell and making the temperature consistency of each battery cell better.

[0046] In other embodiments, the total area of the diversion openings 210 on each flow blocker 200 can also be changed by changing the number and area of the diversion openings 210 on each flow blocker 200, so as to adjust the flow rate of the cooling medium inside each heat management component 100. In other embodiments, in the direction in which the cooling medium passes through the plurality of liquid inlet channels 141, the total area of the diversion openings 210 on each flow blocker 200 is increased in sequence, that is, in the direction from left to right, the total area of the diversion openings 210 on any subsequent flow blocker 200 is larger than the total area of the diversion openings 210 on the previous flow blocker 200. In this way, it is also possible to achieve the technical effects of changing the flow rate of the cooling medium inside each heat management component 100 and enabling the cooling medium to have a relatively consistent cooling effect on each battery cell when flowing through each heat management component 100.

[0047] Continue to refer to Figure 4 、 Figure 5 、 Figure 8 and Figure 9 , specifically in the present application, the flow channel 140 includes a plurality of sub-flow channels 143, and the plurality of sub-flow channels 143 of any one heat management component 100 are in one-to-one correspondence and communication with the plurality of sub-flow channels 143 of the adjacent heat management component 100; any one diversion opening 210 is arranged corresponding to the sub-flow channel 143. It can be understood that the plurality of sub-flow channels 143 of any one heat management component 100 together constitute the flow channel 140 of the heat management component 100. In the embodiment shown in Figure 1 , the number of sub-flow channels 143 is eight, so that the eight sub-flow channels 143 together constitute the flow channel 140 of the heat management component 100. In other embodiments, when the number of sub-flow channels 143 is one, the sub-flow channel 143 is also the flow channel 140 of the heat management component 100. In addition, in the present application, any one sub-flow channel 143 is divided into a liquid inlet portion 143a and a liquid outlet portion 143b. Thus, the liquid inlet portions 143a of the plurality of sub-flow channels 143 together constitute the liquid inlet channel 141, and the liquid outlet portions 143b of the plurality of sub-flow channels 143 together constitute the liquid outlet channel 142. When the plurality of sub-flow channels 143 of two adjacent heat management components 100 are in one-to-one correspondence and communication, specifically, the liquid inlet portions 143a of the two sub-flow channels 143 are connected, and the liquid outlet portions 143b of the two sub-flow channels 143 are connected.

[0048] It can be understood that for the diversion opening 210 opened on the flow blocker 200, when there is one diversion opening 210, the diversion opening 210 can be arranged corresponding to any one of the plurality of sub-flow channels 143, so that the cooling medium in the sub-flow channel 143 can be branched through the diversion opening 210. When there are multiple diversion openings 210, the multiple diversion openings 210 respectively correspond to the plurality of sub-flow channels 143 one by one, so that the cooling medium in the plurality of sub-flow channels 143 can be branched through the corresponding diversion openings 210.

[0049] Further, the flow rate f of the diversion ports 210 on each flow blocker 200 is f = x1s1 / x2s2, where x1 is the number of the diversion ports 210 on the flow blocker 200, s1 is the area of the diversion port 210, x2 is the number of the sub-channels 143, and s2 is the area of the diversion cross-section of the liquid inlet portion 143a in the sub-channel 143. In this application, the condition that the flow rate f of the diversion port 210 on any flow blocker 200 needs to satisfy is 0 ≤ f ≤ 50%. In Figure 4 In the shown embodiment, the shapes and areas of the diversion ports 210 are consistent with the diversion cross-sections of the liquid inlet portions 143a in the corresponding sub-channels 143, that is, s1 = s2. Then, the flow rates of the diversion ports 210 on the eight flow blockers 200 are 0%, 25%, 25%, 37.5%, 37.5%, 50%, and 50% in sequence from left to right. It should be noted that x2s2 can also be understood as the area of the diversion cross-section of the liquid inlet channel 141 in the heat management component 100. By changing the flow rates of the flow blockers 200, the flow rate of the channel 140 can be changed, so as to achieve the technical effect that the cooling medium has a relatively consistent cooling effect on each battery cell when flowing through each heat management component 100. In other embodiments, the shapes and areas of the diversion ports 210 can be adjusted as needed, and the area s1 of the diversion port 210 can also be greater than or less than the area s2 of the conduction cross-section of the liquid inlet portion 143a in the sub-channel 143.

[0050] In addition, the multiple sub-channels 143 are uniformly spaced along the axial direction of the battery cell, so as to cooperate together to cover the entire outer peripheral surface of the battery cell to achieve a better cooling effect.

[0051] Combined with Figure 3 、 Figure 5 、 Figure 8 As shown, specifically in this application, the heat management assembly 10 includes a current collector plate 300. The current collector plate 300 is provided with a liquid inlet cavity 310 and a liquid outlet cavity 320 that are mutually partitioned. In the direction in which the cooling medium passes through the multiple sub-channels 143, the portions of the multiple sub-channels 143 located at the most upstream are all communicated with the liquid inlet cavity 310, and the portions of the multiple sub-channels 143 located at the most downstream are all communicated with the liquid outlet cavity 320. It can be understood that in the direction in which the cooling medium passes through the multiple sub-channels 143, the portions of the multiple sub-channels 143 located at the most upstream are the liquid inlet portions 143a of the sub-channels 143 in the first heat management component 100, so each liquid inlet portion 143a is communicated with the liquid inlet cavity 310, and the portions of the multiple sub-channels 143 located at the most downstream are the liquid outlet portions 143b of the sub-channels 143 in the first heat management component 100, so each liquid outlet portion 143b is communicated with the liquid outlet cavity 320.

[0052] It can be understood that the current collector plate 300 is provided with a liquid inlet 330 and a liquid outlet 340. The liquid inlet 330 is communicated with the liquid inlet cavity 310, and the liquid outlet 340 is communicated with the liquid outlet cavity 320. In this way, the cooling medium can enter the liquid inlet cavity 310 through the liquid inlet 330, and further be split in the liquid inlet cavity 310 to the liquid inlet portions 143a of multiple sub-channels 143. The cooling medium flowing back along the liquid outlet portions 143b of the multiple sub-channels 143 will converge in the liquid outlet cavity 320 and finally be discharged through the liquid outlet 340. By providing the current collector plate 300, the cooling medium can be introduced into multiple sub-channels 143 simultaneously, and the cooling medium flowing back from multiple sub-channels 143 can be converged and discharged simultaneously. In this way, it is not necessary to separately introduce and discharge the cooling medium for each sub-channel 143, making the introduction and discharge of the cooling medium more convenient.

[0053] As Figure 10 shown, specifically in the present application, any two adjacent heat management components 100 are connected together by partial overlap, and the overlap rate D satisfies 0 < D ≤ 100%. It can be understood that no other connection structures are provided between the two heat management components 100, but they are connected together by partial overlap, and the internal flow channels 140 are communicated. It can be understood that for two adjacent heat management components 100, when their outer walls 120 are separated or tangent, there is no overlapping part between the two heat management components 100, and when the outer wall 120 of one heat management component 100 is located between the inner wall 110 and the outer wall 120 of the other heat management component 100, a part of the structures of the two heat management components 100 overlap, and when the outer wall 120 of one heat management component 100 is tangent to the inner wall 110 of the other heat management component 100, the overlapping part of the two heat management components 100 reaches the maximum. By overlapping multiple heat management components 100 pairwise, multiple heat management components 100 can be connected in series as a whole without setting other connection structures, which is also convenient for the communication of the internal flow channels 140 of two adjacent heat management components 100, and helps to make the arrangement of the battery cells more compact.

[0054] Specifically, when two heat management components 100 partially overlap, the maximum distance between their outer walls 120 at the connection is set as d1, and the maximum distance between their inner walls 110 at the connection is set as d2. Then, the overlap rate D of the two heat management components 100 is D = d1 / d2. In this way, when the outer walls 120 of the two heat management components 100 are tangent to each other, d1 = 0, so the overlap rate D = 0. When the outer wall 120 of one heat management component 100 is tangent to the inner wall 110 of the other heat management component 100, d1 = d2, so the overlap rate D = 100%. When the outer wall 120 of one heat management component 100 is located between the inner wall 110 and the outer wall 120 of the other heat management component 100, the two heat management components 100 partially intersect, then d1 < d2, and the overlap rate D satisfies 0 < D < 100%. In other embodiments, comprehensively balancing the gap requirements of the battery cells and the packing density of the battery pack composed of multiple battery cells, the overlap rate D = 30% is preferably selected.

[0055] Combined Figures 11 to 13 As shown, in the present application, when the overlap rate D of two adjacent heat management components 100 is less than or equal to a predetermined value, a reinforcing member 400 is provided on at least one side of the connection between the two adjacent heat management components 100, and the reinforcing member 400 connects the outer walls 120 of the two heat management components 100. It can be understood that when the overlap rate of the two heat management components 100 is relatively large, the connection strength between the two heat management components 100 is relatively large, and when the overlap rate is relatively small, the connection strength between the two heat management components 100 is relatively small. By providing the reinforcing member 400 at the connection between the two heat management components 100 and making the reinforcing member 400 be pulled between the outer walls 120 of the two heat management components 100, the connection strength between the two heat management components 100 can be enhanced to ensure stable connection between the two heat management components 100. It can be understood that in Figure 13 In the embodiment shown, the reinforcing members 400 are provided on both sides of the connection. In other embodiments, the reinforcing member 400 can also be provided only on one side of the connection.

[0056] In the present application, the reinforcing member 400 extends towards the connection between the two heat management components 100 without a gap therebetween, so as to form an integral body with the two heat management components 100, thereby greatly improving the connection strength between the two heat management components 100. In other embodiments, the reinforcing member 400 can also be of a thin-wall structure and be connected to the outer walls 120 of the two heat management components 100 at both ends, and there is a gap between the reinforcing member 400 and the connection between the two heat management components 100. In this way, the effect of strengthening the connection strength between the two heat management components 100 can also be achieved. Further, the predetermined value is 20%, that is, when the overlap rate D of the two heat management components 100 is D ≤ 20%, a reinforcing member 400 needs to be provided at the connection between the two adjacent heat management components 100 to improve the connection strength.

[0057] Further, an outer surface of the reinforcing member 400 facing away from the connection of the two heat management members 100 and the outer walls 120 of the two heat management members 100 connected thereto together define a groove. Such an arrangement allows a part of another heat management member 100 to be received in the groove, so that multiple heat management members 100 can be arranged in an array and the structure is more compact.

[0058] In the present application, the outer surface of the reinforcing member 400 facing away from the connection of the two heat management members 100 is defined as a predetermined surface 410. The predetermined surface 410 can be a flat surface or a curved surface. Further, the connection positions of the predetermined surface 410 and the outer walls 120 of the two heat management members 100 are respectively defined as A and B. Then, for any one of the two heat management members 100, the angle between the tangent at positions A and B and the line connecting positions A and B is α, and 95° ≤ α ≤ 120°. In this way, not only can the connection strength between adjacent two heat management members 100 be ensured, but also it is helpful to form a more suitable groove. Further, α is preferably 100°.

[0059] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermal management component, characterized in that: It comprises a plurality of thermal management components, any of which is provided with an inner wall and an outer wall located outside the inner wall, the inner wall encloses a storage space capable of accommodating a battery cell and matches the shape of the battery cell, a flow channel for cooling medium to pass through is provided between the inner wall and the outer wall, the plurality of thermal management components are connected in sequence and the internal flow channels are connected in sequence.

2. The thermal management assembly according to claim 1, characterized in that A flow blocker is provided at the connection between any two adjacent thermal management components. The flow channel is arranged around the inner wall and includes a liquid inlet channel and a liquid outlet channel located on opposite sides of the flow blocker. The liquid inlet channels and the liquid outlet channels of any two adjacent thermal management components are connected.

3. The thermal management assembly according to claim 2, characterized in that Among the plurality of flow-blocking members, at least some of the flow-blocking members are provided with one or more flow guide ports, and the liquid inlet channels and the liquid outlet channels located on both sides of the flow-blocking members are connected via the flow guide ports.

4. The thermal management assembly according to claim 3, characterized in that In the direction in which the cooling medium passes along the plurality of liquid inlet channels, the total area of ​​the guide openings on each of the flow blocking members increases sequentially or in a step-like manner.

5. The thermal management assembly according to claim 3, characterized in that The flow channel includes a plurality of sub-flow channels, and the plurality of sub-flow channels of any one of the heat management components are connected to the plurality of sub-flow channels of an adjacent heat management component in a one-to-one correspondence; and any one of the flow guide ports is arranged corresponding to the sub-flow channels.

6. The thermal management assembly according to claim 5, characterized in that The thermal management component includes a collecting plate, which is provided with a liquid inlet cavity and a liquid outlet cavity separated from each other. In the direction in which the cooling medium passes along the multiple sub-channels, the upstream parts of the multiple sub-channels are all connected to the liquid inlet cavity, and the downstream parts of the multiple sub-channels are all connected to the liquid outlet cavity.

7. The thermal management assembly according to claim 1, characterized in that Any two adjacent thermal management components are partially overlapped and connected together, and the overlap ratio D satisfies 0<D≤100%.

8. The thermal management assembly according to claim 7, characterized in that The overlap ratio D=30%.

9. The thermal management assembly according to claim 7, characterized in that When the overlap rate D between two adjacent heat-management components is less than or equal to a predetermined value, a reinforcing component is provided on at least one side of the connection between the two adjacent heat-management components, and the reinforcing component connects the outer walls of the two heat-management components.

10. The thermal management assembly according to claim 9, characterized in that An outer surface of the reinforcing member facing away from the connection point of the two heat-management members and the outer walls of the two heat-management members connected thereto together form a groove; and / or the predetermined value is 20%.

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